Weegy: B. 400 square feet
User:
14. Which one of the following groups of numbers includes all prime numbers?
A. 1, 3, 11, 23
B. 3, 11, 23, 31
C. 2, 3, 5, 15
D. 7, 17, 63, 67
Weegy: A. 3, 11, 23, 31
User:
15. Which of the following is a composite number?
A. 91
B. 139
C. 13
D. 29
Weegy: 91 is a composite number.
User:
16. Helen had to read 148 pages of her science textbook in the 4 days remaining before an exam. If she reads the same number of pages each day, how many pages will she need to read each day?
A. 40
B. 38
C. 37
D. 36
Weegy: Helen had to read 148 pages of her science textbook in the 4 days remaining before an exam. If she reads the same number of pages each day, she will need to read (148/4) 37 pages each day.
User:
17. What is the value of 12.5 × 107?
A. 1.2500000
B. 1,250,000
C. 12.5000000
D. 125,000,000
Weegy: 12.5 ? 10^7 is 125,000,000
User:
18. What is the prime factorization of 1,260?
A. 2 × 2 × 3 × 3 × 5 × 7
B. 2 × 3 × 5 × 7
C. 2 × 3 × 5 × 6 × 7
D. 4 × 5 × 7 × 9
Weegy: The prime factorization of 1,260 is 2 x 2 x 3 x 3 x 5 x 7.
User:
19. What is the cube of 6?
A. 36
B. 42
C. 18
D. 216
Weegy: The cube of 6 is 216. 6 * 6 * 6 36 * 6 = 216
User: 20. What is the value of 324?
A. 18
B. 128
C. 1,048,576
D. 648
Weegy: D. 1,048,576
User:
9. Will bought 3 college textbooks. One cost $32, one cost $45, and one cost $39. What is the average price of his books? Choose the statement that correctly calculates the average.
A. $32 + $45 + $39 ÷ 3
B. $32 ÷ 3 + $45 ÷ 3 + $39
C. 3 × $32 + $45 + $39
D. ($32 + $45 + $39) ÷ 3
Weegy: The answer is: B. ($32 + $45 + $39) ? 3. The average price is: $38.67. [smile]
User:
1. Solve this equation: 80 = 3y + 2y + 4 + 1.
A. y = –15
B. y = 75
C. y = 1/5
D. y = 15
Weegy: 80 = 3y + 2y + 4 + 1, 80 = 5y + 5, 75 = 5y, divide both sides by 5 to get y = 15. The answer is A. y = 15.
User:
2. ...
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